# Listing of Color Additives Exempt From Certification; Astaxanthin Dimethyldisuccinate; Confirmation of Effective Date
> **Food and Drug Administration** · Final rule; confirmation of effective date. · Published 2010-02-05 · Effective 2009-11-05 · 75 FR 5887
## Document
- **Document number:** 2010-2522
- **Category:** fda-food
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 75 FR 5887
- **CFR reference:** 21 CFR 73
- **Publication date:** 2010-02-05
- **Effective date:** 2009-11-05
- **HHS docket:** Docket No. FDA-2007-C-0044
## Abstract

The Food and Drug Administration (FDA) is confirming the effective date of December 8, 2009, for the final rule that appeared in the Federal Register of November 5, 2009. The final rule amended the color additive regulations to provide for the safe use of astaxanthin dimethyldisuccinate as a color additive in the feed of salmonid fish to enhance the color of their flesh.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/02/05/2010-2522/listing-of-color-additives-exempt-from-certification-astaxanthin-dimethyldisuccinate-confirmation-of)
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